I've been playing the Japanese version for a bit now, and I quite enjoy it. The single player levels feel a lot like puzzles, trying to move and situate your troops so you can kill enemies in the least amount of moves so they don't get a chance to hit you.
I haven't played much battle, but the modes I tried were interesting (including an invasion mode where you just need to occupy enemy space to win).
I need to play more of it.